[INFO] fetching crate mica-std 0.5.0...
[INFO] testing mica-std-0.5.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate mica-std 0.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mica-std 0.5.0
[INFO] finished tweaking crates.io crate mica-std 0.5.0
[INFO] tweaked toml for crates.io crate mica-std 0.5.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mica-std 0.5.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1ebe75da58510ab219ead5202d11a68b7c83307f02fd4121bfb2e9bba85383f
[INFO] running `Command { std: "docker" "start" "-a" "d1ebe75da58510ab219ead5202d11a68b7c83307f02fd4121bfb2e9bba85383f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1ebe75da58510ab219ead5202d11a68b7c83307f02fd4121bfb2e9bba85383f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1ebe75da58510ab219ead5202d11a68b7c83307f02fd4121bfb2e9bba85383f", kill_on_drop: false }`
[INFO] [stdout] d1ebe75da58510ab219ead5202d11a68b7c83307f02fd4121bfb2e9bba85383f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8d6b51178ccdcdafd8df70e52e0f139d94dac5faaa890eaacf960575f36138a
[INFO] running `Command { std: "docker" "start" "-a" "a8d6b51178ccdcdafd8df70e52e0f139d94dac5faaa890eaacf960575f36138a", kill_on_drop: false }`
[INFO] [stderr]    Compiling mica-language v0.5.0
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling mica-hl v0.5.0
[INFO] [stderr]    Compiling mica-std v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this function depends on never type fallback being `()`
[INFO] [stdout]   --> src/iterators/counters.rs:70:1
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub(crate) fn load_counters(engine: &mut Engine) -> Result<(), mica_hl::Error> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in Rust 2024 and in a future release in all editions!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/never-type-fallback.html>
[INFO] [stdout]    = help: specify the types explicitly
[INFO] [stdout] note: in edition 2024, the requirement `!: TryFromValue` will fail
[INFO] [stdout]   --> src/iterators/counters.rs:95:67
[INFO] [stdout]    |
[INFO] [stdout] 95 |    engine.start("mstd-counters.mi", include_str!("counters.mi"))?.trampoline()?;
[INFO] [stdout]    |                                                                   ^^^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dependency_on_unit_never_type_fallback)]` (part of `#[deny(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: use `()` annotations to avoid fallback changes
[INFO] [stdout]    |
[INFO] [stdout] 95 |    engine.start("mstd-counters.mi", include_str!("counters.mi"))?.trampoline::<()>()?;
[INFO] [stdout]    |                                                                             ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mica-std` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a8d6b51178ccdcdafd8df70e52e0f139d94dac5faaa890eaacf960575f36138a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8d6b51178ccdcdafd8df70e52e0f139d94dac5faaa890eaacf960575f36138a", kill_on_drop: false }`
[INFO] [stdout] a8d6b51178ccdcdafd8df70e52e0f139d94dac5faaa890eaacf960575f36138a